must announce
Verbo regular: announce - announced- announced

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must announce
you must announce
he must announce
we must announce
you must announce
they must announce 	I must be announcing
you must be announcing
he must be announcing
we must be announcing
you must be announcing
they must be announcing	I must have announced
you must have announced
he must have announced
we must have announced
you must have announced
they must have announced	I must have been announcing
you must have been announcing
he must have been announcing
we must have been announcing
you must have been announcing
they must have been announcing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't announce
you mustn't announce
he mustn't announce
we mustn't announce
you mustn't announce
they mustn't announce 	I mustn't be announcing
you mustn't be announcing
he mustn't be announcing
we mustn't be announcing
you mustn't be announcing
they mustn't be announcing	I mustn't have announced
you mustn't have announced
he mustn't have announced
we mustn't have announced
you mustn't have announced
they mustn't have announced	I mustn't have been announcing
you mustn't have been announcing
he mustn't have been announcing
we mustn't have been announcing
you mustn't have been announcing
they mustn't have been announcing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I announce?
must you announce?
must he announce?
must we announce?
must you announce?
must they announce? 	must I be announcing?
must you be announcing?
must he be announcing?
must we be announcing?
must you be announcing?
must they be announcing? 	must I have announced?
must you have announced?
must he have announced?
must we have announced?
must you have announced?
must they have announced? 	must I have been announcing?
must you have been announcing?
must he have been announcing?
must we have been announcing?
must you have been announcing?
must they have been announcing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I announce?
mustn't you announce?
mustn't he announce?
mustn't we announce?
mustn't you announce?
mustn't they announce? 	mustn't I be announcing?
mustn't you be announcing?
mustn't he be announcing?
mustn't we be announcing?
mustn't you be announcing?
mustn't they be announcing? 	mustn't I have announced?
mustn't you have announced?
mustn't he have announced?
mustn't we have announced?
mustn't you have announced?
mustn't they have announced? 	mustn't I have been announcing?
mustn't you have been announcing?
mustn't he have been announcing?
mustn't we have been announcing?
mustn't you have been announcing?
mustn't they have been announcing?